At long, long last, the original Rockman X (i.e Mega Man X) is FINALLY headed to the Wii's Virtual Console... in Japan.
A report at over Siliconera indicates the SNES classic was recently added to Japan's April Virtual Console release schedule, in addition to another beloved classic, Chrono Trigger. As with all SNES/SFC games, Rockman X will run you 800 Wii Points ($8).
As for a release outside of Japan, we can certainly be hopeful for the game to arrive a short while after the Japanese release. Usually (but not always) games released on the Japanese VC make their way to the rest of the world from anywhere between a week to a couple months later. Best to keep an eye out on the ESRB; impending Virtual Console releases often get "leaked" there.
Fingers crossed for a release sooner rather than later!